The shipbuilding empire fueling China's naval rise is a juggernaut, but tough questions remain

• China's massive shipbuilding industry is key to its military's naval modernization.
• Dual commercial and military shipyards and China's national ambitions are major strengths.
• But military corruption and future maintenance issues raise questions about long-term sustainability.

China's shipbuilding industry is at the core of its efforts to modernize its navy, producing new warships at astonishing speeds.